Sound-conveying tube for talking-machines.



PATEN'TED JU R.A. BOSWELL. SOUND CONVEYING TUBE FOR, TALKING MAGHINEAPPLICATION FILED 00127.. 19.05.

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PATENTBD JULY 2, 1907.

R. A. BOSWELL. v SOUND CONVEYING TUBE FOR TALKING M AOHINES.

APPLICATION FILED 0OT.7,1905.

3 SHEETS-SHEET 2.

No. 859,165. PATENTED iULY 2, 1907.

v R. AWBOSWELL.

SOUND CONVEYING TUBE FOR TALKING MACHINES. APPLIUATION FILED OUT.7,1905- 3 SHE'ETSSHEET 3.

ROBERT A. BOSWELL; OF WASHINGTON; nrs'rmor oF ooLUMBia.

soUND-oonvnirmeTUBE nonirsnxme-mnonmns.

' Specification of Letters Patent:

' -Patented uly 1feo 7.

Application filed octotera sos. $erialllm281fl65, v

To all whom it may concern:

Be it known that ROBERT A. BoswELL, a citizen of the-United States;residing at Washington, in the District of Columbia, have invented acertain new and useiul Sound-Conveying Tube for Talking-Machines, ofwhich the following is a description, reference being. a v had'to theaccompanying" drawing and to the .figures of reference markedthereon. pe I I This invention relates to sound conveying tubes for talkingmachines, particularly talking machines of the disk type, and has forits object toprovide 'a' simple} inexpensive and eflicient: constructionof the joint or connection between the reproduc'er arm and the 'deliveryor amplifying horn of suc'h;sound conveying tubes, by which thenecessary movements of both the reproducer arm and the horn, .bothhorizontal. and vertical, may all be effected from substantiallythesamepoint or center. a

. arm and the born by which these parts may have free- A further objectof the invention isto provi de a construction ofjointor connectionbetween the reproducer dom of movenent'independent of each other, sothat whatever may be the position of the horn the free end 1 of thereproducer arm mayzmovefreely as may here 'quired to permit the stylusto follow the record groove.

A further object of the invention is to provide means bywhi'eh thehornmaybe held in any position in which it may be placed so asto direct thesound in anydesired direction and to provide means by which the free endof the reproducer arm-maybe held in raised position when it is desiredto lift itffrom the record toperm'it the record to be removed and a' newone placed in position.

A further object of the invention is to provide means A by which thefree end of the reproducer will be preyented from sagging if swung toone side off the record.

*With the above described objects in view'aswellas,

others hereinafter set forth, theinvention consists in the constructionand combination of elements herei nafterdescribed and pointed out in theclaims.

. Referring to the drawings: Figure 1' is a perspective view of atalking machine having the invention applied thereto; Fig. 2 is avertical sectional yiew through the joint between the reproducerarm andthe horn; Fig. 3

is a Vi w similar to Fig. 2 but showing a slightly mods; fied form ofjoint; Fig. 4 is a view similar to Fig". ,2 but 7' showing a furthermodificationj- Fig; 5 is a View similar to Fig. 2 showing a furthermodification; Fig. 6 isffa 1 detail sectional lview of'the constructionshown in Fig. 5, but'showin'g the parts in'position to be assembled;Fig. 7 is a view similar to Fig. 2, showing a construction similar tothat shown in Figs. 5 and 6, but with slight modifications; Fig. 8 is adetail perspective view of the joint end ofthe horn shown in Fig. 7;Fig. 9is a detail perspective view of joint endof the reproducer arm.

shownin Figs.- 5, 6 and 7; and Fig. 10 is a horizontal v sectional viewon line arr-u: of Fig. 5,

In the drawings, 1 is the casing of a talking machinecontaining theusual mechanism for rotating the table a carrying the record'disk-., I fi I 2 is a bracket secured "to one side ofthe casing for supporting'thereproducer arm and horn.;- V v 5 3 is thereproducer arm carrying -atitsfree end 'thep usual'sound box 3 and having at its other end the up-Ward curve or elbow 4. j I

',.5 is the horn whi'chis of usual form having at the end PPQSi i smouth the downward curve or elbow as .'shown."= I

The bracket 2'is provided at its upper end with a ring 25, which in theseveral forms of the invention f hereinafterdescribed serves to support,through iiitermediate means both the reproduc er arm and the horn. Thisring may be integral with the bracket as shownin Figs. 2, 3 and 4, ormay be separately constructed and' connected with the bracket as shownin Figs-5,6 and '7. 1'

In the construction shown in Figs. 2, 3 and 4, the ring 2 5.is centrallybored to receive a ball 6 which is held. imposition byanyrconvenient'meansas by screws 7} In the upper and'lower faces of thering 25am formed recessesB and jj9 respectively. To the end of the horn5 is secured an extension 10 preferably detachably connectedto the endof the horn as'by a'screw'joint 34 -35, thisex tension being adapted toball 6. andto be held in place by a ring 11 bearing .upon its, upperface.

Thecurve'd emits elbows of the reproducer arm is provided with a'flange37, adapted to fit and move readily upon the lower surface of the ball 6and to be held in place by a ring.12 bearing against its lower surface.The'rings I1 and 12 may beheld in place as shown in'Figs. 2 and 3, bymeans of thumb screws 13; or'the rings may be screw-threaded as shown at114, to engage screw threads 15, formed in the recesses 8 and 9. Theball 6 is provided with a central vertical bore 16 which may. besubstantially cylindricalas shown in Figs. 2 and ,4, or may-be taperedas shown in Fig. 3, sov as to form withfl the reproducer arm and fit andmove readily upon the upper surface of the :the horn a passage ofgradually increasing diameter Ifromthe soundbox to the mouth of thehorn.

. "lhe flang-37 'on the end of the reproducer armis preferably-ofgreater-width on the side opposite the free endof the reproduce-r arm asshown atz38' so 'as j to form a'stop adapted to strike the bottom of there- 'cess 9, when the free end of the reproducer arm is off the, record"disk and thus prevent the free end of the arm from droppin'giar enoughto injurethe stylus or spundbox'. 3 i In operation, the ringlZ will beso set as to hold the flange" 37 against the lower surface of the ball6, but at the same timef't'o permit it to move "freelyin eitherahorizontal direction as maybe necessary to screws or by the engagementof the screw threads ].415, so as to hold the horn in any desiredposition, .it being possible to shift the position of the horn byslightly loosening the thumb screws or by unscrewing the ring.

By the construction above described, a simple, in-

v expensive form of joint is secured which permits the reproducer arm tomove freely in any direction and permits the horn to be readily adjustedin any position either horizontally or vertically, and holds it firmlyin adjusted position, whatever the movement of the reproducer arm maybe, without materially varying the. form or character of the soundpassage and without interrupting its continuity.

In the construction shown in Figs. 5 to 10 inclusive, instead of theball 6 fixedly held in the ring 25 as in Figs. 1 to i inclusive, ahollow ball 32 is provided having a ring 33 thereon provided with screwthreads 34 to engage the screw threads 35 of the end of the horn. This'hollow ball 32 fits and is adapted to move readily in a bowl 31 whichis provided at its upper end with screw threads 30 to engage screwthreads formed on the inher face of a depending flange 29 of the ring25. The flange 37 of the'end of the reproducer arm fits and is adaptedto move freely on the outer surface of the bowl 331 and is held thereonby a ring 28 screw-threaded at 27 to engage screw- -threads formed on'the inner face of a depending flange 26 of the ring 25, the innersurface of the ring 28 being so shaped as toform between it and theouter surface ofthe bowl 32 a recess in which the flange 37 may movefreely.

For the purpose of providing means by which the free end of thereproducer arm may be held in raised position if desired the widerportion 38 of the flange 37 is provided on its outer surface with seriesof indentations 39 adapted to receive the pointed end of a spring pin 40carried by the ring 28. For the purpose of holding the horn 5 at anydesired angle relative to a horizontal plane, the ring 25 may beprovided with a set screw 36 carried in a suitable lug on the upper faceof the ring and adapted to bear against the outer face of the hollowball 32 as shown in Fig. 5 or the hollow ball 32 may be provided on itsouter face as shown Figs. 7 and 8 with series of indentations 12 withwhich the pointed end of a spring pin 41 carried by a lug on the upperface of the ring 25 is adapted to engage.

.In assembling the invention in the form shown .in Figs. 5 to 10inclusive, the end of the horn 5 is inserted in the ring 25 from theupper side and the hollow ball 32 is inserted from below and the screwthreads 34 35 are 2 caused to engage. The bowl 31 is then secured inposition by causing the screwthreads 30 to engage the screw- 1 cured inposition.

It will be noted that in all of the constructions shown,

one member of the joint, the ball 6, in Figs. 2, 3, 4 and the bowl 31,inv Figs; 5 to 10 inclusive, is fixed, and

forms with the members formed on the ends of the reproducer arm andthehorn, a ball and socket joint, the fixed or stationary member in eachcase having surfaces on which the members carried at the ends of thereproducer arm and the horn have the free movement in any socket joint.

It will also be noted that in all of the constructions shown, themovements of the reproducer arm and horn on the fixed or stationarymember are about a common center both as regards their movements-inhorizontal planes as well as in vertical planes. And it will also benoted that in none of the constructions shown is the sound passageobstructed the sound passage in the construction shown in Fig. 3 beingtapered regularly from the reproducer arm to the horn.

In the drawings the applicant has illustrated the basic idea of breakingsubstantially the center of an amplifying horn, with a flexible joint,so as to allow the free ends thereof to have a vertical movement as wellas a horizontal movement; in view of which it is to be understood thatthe construction of the device may be varied if desired withouthindering the commercial value thereof; the right being reserved to usesaid variations and to use, manufacture and vend, eitherthe connectionof the horn, or the connection of the arm separately, if desired,without departing from the spirit of the invention, so long as they areembraced within the scope of the appended claims.

Having thus described the invention -what is claimed as new with theprotection of Letters Patent is 1. In a talking machine a reproducer armand horn a ball and socket joint connection therebetween to permit boththe reproducer arm and horn to have a universal movement 2. In a talkingmachine, the combination with the.re--

producer arm and the horn of a joint connecting the reproducer arm andthe horn, comprising a stationary member adapted to form sphericalbearings for both the reproducer arm and the horn.

a stationary spherical member, a member carried by the reproducer armcooperating with,the stationary member and a member carried by the hornalso cooperating with the stationary member.

' desired direction'which is characteristic of the ball and I 3. In atalking machine, a reproducer arm and horn a ballv and socket jointconnection between them, comprising 4. In a talking machine, thecombination with the reproducer arm and the'horir of a flexible jointconnecting the reproducer arm and the horn, comprising a stationaryspherical member having separate bearing surfaces'adapted to formspherical bearings for the reproducer arm and horn respectively.

'5. In a talking machine, the combination with the re producer arm andthe horn of a'iolnt connecting the reproducer arm and thehorn comprisinga stationary memher having separate spherical bearing surfaces for there- 3 producer arm and the horn respectively and means for holding thehorn against movement/on the stationary member. V 6. Ina talkingmachine, the combination with the re producer arm and ,the horn of ajoint connecting the reproducer arm and the horn comprising a stationarymember having separate spherical bearing surfaces for the re-"producerarm and theihorn respectively, a ring supporting -the'stationary member and serving as 'an abutment to limit the verticalmovement of the reproducer arm.-

7. In a talking machine, the combination with the reproducer arm and thehorn of. a joint connecting the reproducer arm and the horn, comprisinga stationary memher "having spherical bearing surfaces, means carried bythe horn adapted to fit one of the bearing surfaces, a flange on the endof thereproducer arm adapted to fit the other bearing surface, a ringsupporting the stationary member and means carriedby the ring forengaging the flange of the reproducer arm 'to hold the free end of saidarm in' raised position.

8. In a talking machine, the combination with the re-' producer arm andthe horn of a joint connecting the reproducer arm and the horn,comprising a stationary mem ber having spherical'bearlng surfaces, meanscarried by/ the horn adapted to fit one ofthe bearing surfaces, aflangeon the endof the reproducer arm adapted'to fit the other bearingsurface, a ring supporting the.stationary member consisting of a springpressed pin, and means car' .ried by the ring for engaging the flange ofthe reproducer arm to hold the free end ofsaid arm in raised position.

9. In a-talking machine, the combination withthe reproducer arm and thehorn, of a joint connecting the reproducer arm and horn comprising astationary member having spherical bearing surfaces, means carriedbythe' horn adapted to fit one ofthe bearing surfaces, a flange" on theend of the reproducerarm adapted to fit the other bearing surface, andhaving opposite the free end of the reproducer arm an extension, and' a'ring supporting the stationary member adapted to form an abutmentfortheextension of said flange whereby the downwardimovement of the free endof the reproducer armis-iimited. Y T

10. In a talking machine the combination withthe're producer arm and thehorn,-of a joint connectingihtiier'eproducer arm and horn, comprising a1 stationaryball, means carried by the ends of the reproducer arm, andthe horn respectively, adapted to fit and move on opposite bearingsurfaces" of the ball and means -for holding'the ends of the reproducerarm and horn against said ball.

. 11. In a talking machine, the combination with there- .ical shaped,member, means carried by the ends of the reproducer arm and the hornadapted to fit opposite hearing surfaces of the spherical shaped member,and means for'holding the ends of-the repro'ducer arm and-hornagainstsaid spherical shaped member.

13. In a talking machine, ameproducerarm' and horn,

a joint fiexibly connecting the arm and born about a common center.

14. In a talking machine, a reprodncer arm and horn, and a flexiblec'ommoncenter joint connecting between them. said joint having meanstolimit-the downward movement of the-horn. 15. In a talking machine, anamplifying-hornand a flexible ball joint breaking at a point between theends.

16. In a talking machine, .an amplifying horn and a common centerjoint-breaking at a point between the ends thereof, so' as to allow thefreeends to have vertical and horizontal movements.

17. In a talking machine fthe' combination with the reproducer armand'horn, of a joint. connecting the repro ducer arm and th'e horncomprising a stationary member having separate spherical bearingsurfaces for the reproducer arm and the horn respectively and means toprevent downward movement of the, horn. o

18. In a talking machine, a reproducer arm and horn having a jointpivotally 'connecting them about a common center so as to permit "themvertical and horizontal mov'ements' 19. In a talking machinefareproducer arm and horn, a

' joint pivotally connecting' them about a' common center,v

comprising a stationary member having spherical bearing universally uponthe spherical bearing surfaces, said joint the reproducer arm and born.1 1 2l.'-Inla talking machine, a. reproducer arm and horn, a jointconnectingthem together, comprising a stationary spherical bearingmember and means carried by the horn to move universally upon saidstationary spherical bearing member. o

22.;In a talking machine, a reproducer arm and a born, a jointconnecting-them together, comprising astationary spherical bearingmember, and means carried by the repro- 'ducer arm to moveuniversally-upon said stationary spherical bearing member I 23. Inla'talking'machine, a reproducerarm and horn, a jointv connecting: themtogether, comprising a spherical to mbve universally npon said'.spherical, bearing member, and saidfmeinshaving means to limit thedownward movement ofthe reproducer arm. 4 "24. 'In'a talking machine, areprodnc rm and horn, a

bearing member, means carried by the'hornto move univer- -s'allynponisaid spherical bearing member, and said joint ,having mean's'tolimit the downward movement of the -horn. 1

25. Inn talking-machine, a reproducer arm and born, a flexible jointconnecting them together, comprising a stationary bearing member, saidarm and horn having means ,to mbvenniversally upon :said stationarybearing member. Ina talking machine a reproducer arm and horn, a

jtionarybearing member, said. arm and horn having means ments of thefarm and horn.

. 27. In a talking. machine, an amplifying horn having a com'pris'inglastationary. bearing member and the sections ,of the said-horn onopposite sides 'of saidIbearing member 'having'-meansl to" moveuniversally upon said stationary bearing'member.

' 28. Ina talking machine, ssound conveying tube having a flexible jointbreaking at a: point between the ends thereof comprising a stationarybearing member, the sections of the'said sound conveying tube uponopposite sides of said bearing-member havingv means to move universallyupon said stationary bearing member and said joint having .means tolimit the downward movement of the free ends of the sound conveyingtube.

29.v In a talking machine, a sound conveying tube having -a jointbreaking'at a point between the ends thereof, comprising a sphericalstationary bearing member and the section's ofthesaid sound conveyingtube on opposite sides of said hearing member having means to moveuniversally upon sald spherical stationarybearing memberfl 30."Atalkingmachine comprising a relatively stationary member. having separatebearings and a reproducer arm and horn .operativelyconnected to saidbearings, each 'to swing horizontally and vertically thereon.

' 31. A -talking"machine comprising a relatively stationary memberhaving separate bearings and a reproducer armand horn flexibly connectedtosaid bearings, each to swing universally' thereon.

o 32. In a flexible amplifying horn, ajoint located at a pointbetweenthe free ends'thereof comprising a station between the free ends thereofcomprising a stationary spherical bearing member operative to allow foruniversal movements of the free ends of the horn, and means to limit thedownward movement of the horn.

34. In a flexible jointed amplifying born, a joint located between thefree ends thereof comprising a spherical bearing member so as to allnwfor universal movements of the free ends of the horn, and means /forholding the free ends to saidspherical bed'ring member.

.35. A talking machine comprisi'* a relatively stationconnected to saidbearing so as? movement.

' flexible joint breaking at a point between the ends thereof ary memberhaving a spherical bea ng, and'a hohanflexibly o have fa universal.

having means to limit the downward movement of both i bearing. member,means .carried by the reproducer arm joint connecting-them together,comprising a spherical flexiblejoint connecting them ,togethercomprising a statomove'un'iversallyupon-said stationary bearing memberand said joint'having means to limit the downw'ardnziove 33. In aflexible jointed amplifying horn, a joint located 36. A talking machinecomprising a reproducer arm and horn; an operative connectiontherebetwee'n; each of said parts having a nniversal movement about saidconnection.

37. In a talking machine; a horn support; a reproducer arm and hornconnected thereto upon a common center to have universal m0vements.-

38. A reproducer arm and horn; comprising'a connection therebetween topermit both the arm and horn 'to move universally about said connectionupon a common center. 1 4

39. talking machine comprising a reprodueer arm and horn; an operativeco'nnection therebetween; each of said parts having a universal movementabout said connection said connection having means to limit the downwardmovement of the arm and horn.

40. In a talking machine,ai'eproducer arm and horn; and a ball andsocketjointtherebetween.

In witness whereof, the applicants signature is hereunto aifixed inthepresence of two witnesses. i

I ROBERT A. BOSWELL.

Witnesses:

RoBnnT' S. Boswnnn, FRANK A. HARRISON.

